AppleScript text dialog - How to display multiline text in a dialog

AppleScript dialog text FAQ: How can I display an AppleScript dialog showing multiple lines of text?

Once you know how to do it, this is surprisingly easy, and there are a couple of ways to do it. Here are a few examples:

display dialog "Line 1
Line 2
Line 3"

Running this program displays the following AppleScript text dialog:

An AppleScript dialog that displays several lines of text.

Here's another way to accomplish the same thing:

display dialog "Line 1\nLine 2\nLine 3"

And finally, here's one more way:

display dialog "Line 1" & "\nLine 2" & "\nLine 3"

Of course there are even more variations, but hopefully you get the idea. Finally, it's interesting to note that the ScriptEditor re-formats these last two examples, and they end up looking like my first example.